> > For me it seems to be slow due to the sorting. Is this right? > > Is this normal at all? Is it possible to make it faster? > > If you know, that your result does not produce duplicates > (which are filtered away with "union") you can use a > "union all" which should be substantially faster, since it does > not need to sort.
Thank you to all who helped. I knew nothing about UNION ALL, but now it's OK. Regards, Zoltan ---------------------------(end of broadcast)--------------------------- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
